Cameron Diaz will no longer be playing dress-up with Rachel Zoe. Sources tell us Diaz, one of Zoe’s biggest clients, is no longer working with the pint-sized stylist-to-the-stars. Some sources snipe that Zoe’s been too busy building her own empire, with clothes, shoes, bags and accessories bearing her name, and that she’s got less time for styling her celeb clients who still include Anne Hathaway, Jennifer Lawrence and Kate Hudson. Reps for Diaz and Zoe didn’t get back to us.